Valve welding hnua non-fusion leh non-penetration defect ka neih chuan engtin nge ka tih ang?

1. Defect ziarang
Unfused tih hian weld metal chu a hmin kim lo va, base metal nen emaw, weld metal layer inkarah emaw a inzawm lo tihna a ni.
Failure to penetrate tih hian welded joint zung chu a lut kim lo tih phenomenon a kawk a ni.
Non-fusion leh non-penetration pahnih hian weld cross-sectional area effective tak chu a ti tlem ang a, a chakna leh tightness a ti tlem ang.
2. A chhan
Fusion lo awm chhan: welding current a tlem lutuk emaw, welding speed a chak lutuk emaw a, chu chuan lumna a ti tlem a, base metal leh filler metal chu a hmin kim thei lo. Groove angle a tlem lutuk a, gap a tawi lutuk emaw, blunt edge a lian lutuk a, chuvangin welding laiin arc chu groove root chhung thuk takah a lut thei lo va, chu chuan base metal leh weld metal chu a fuse lo a ni. Weldment chung lamah hian bawlhhlawh, oil stain leh rust ang chi a awm a, hei hian metal melting leh fusion a nghawng a ni. Hman dik loh, electrode angle dik lo, bar phurh dan dik lo, etc. te hian arc chu groove sir atanga a inthlak emaw, groove chu a khuh tha tawk lo emaw a ni.
Non-penetration chhan: Fusion loh chhan thenkhat ang bawkin, welding current tlem lutuk, welding speed chak lutuk, groove size dik lo, etc. Welding kan tih hian arc a sei lutuk a, arc lumna chu a darh zau lutuk a, chu chuan root metal chu a melting tha lo hle. Weldment-a assembly gap chu a inang lo hle a, gap lian tak awmna part-ah chuan weld penetration neih loh a awlsam hle.
3. Processing tih dan tur
Unfused treatment: Fused lo surface tan chuan grinding wheel hmangin unfused parts te chu polish off theih a ni a, chutah chuan re-weld theih a ni. Re-welding kan tih hian welding process parameters te chu base metal leh filler metal te a melt kim theih nan heat input tling tak a awm theih nan siamrem tur a ni. Internal non-fusion atan chuan a tlangpuiin non-fusion awmna hmun leh a zau zawng hriat nan non-destructive testing method hman a ngai a, chutah chuan carbon arc gouging emaw machining hmanga non-fusion parts te chu paih chhuah a ngai a, chutah chuan repair welding tih a ngai bawk. Welding siamthat dawnin groove tihfai ngaihven la, welding angle leh bar phurh dan tur control rawh.
Impervious treatment: Unwelded penetration thuk zawng chu a thuk lo a nih chuan, unpenetrated part chu grinding wheel hmanga grinding hmangin lakchhuah theih a ni a, chutah chuan welding siamthat theih a ni. Depth lian tak tak tan chuan carbon arc gouging emaw machining emaw hmangin weld penetration hmun zawng zawng chu metal tha tak a chhuah hma loh chuan paih vek a ngai tlangpui a, chutah chuan welding siamthat a ngai bawk. Welding siamthat dawnin welding current, voltage leh welding speed te kha uluk taka control tur a ni a, chutiang chuan a zung chu a lut kim thei ang.
4. Welding material siamthat
A tlangpuiin welding materials chu valve base material nen a inang emaw, a inang emaw thlan tur a ni. Entirnan, carbon steel valve pangngai tan chuan E4303 (J422) welding rod thlan theih a ni a; Stainless steel valve tan chuan a inmil tur stainless steel welding rod chu thil chi hrang hrang a zirin thlan theih a ni a, chu chu 304 stainless steel tan A102 welding rod te hi a nivalve te a awm, A022 welding rods te chu 316L stainless steel tan a nivalve te a awm, adangte.

Tianjin Tanggu Water-Seal Valve Co.,ltd hian a siam chhuah ber a nibutterfly valve a ni, kawngkhar valve, .Y-strainer hmanga siam a ni, balancing valve a ni, check valve, etc. te a ni.